CA2892799C - Procede pour detecter des proprietes d'imagerie geometrique d'un detecteur a ecran plat, systeme d'examen aux rayons x configure en consequence et corps d'etalonnage - Google Patents

Procede pour detecter des proprietes d'imagerie geometrique d'un detecteur a ecran plat, systeme d'examen aux rayons x configure en consequence et corps d'etalonnage Download PDF

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CA2892799C
CA2892799C CA2892799A CA2892799A CA2892799C CA 2892799 C CA2892799 C CA 2892799C CA 2892799 A CA2892799 A CA 2892799A CA 2892799 A CA2892799 A CA 2892799A CA 2892799 C CA2892799 C CA 2892799C
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geometrical
ray
calibrating body
flat panel
discrete
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CA2892799A1 (fr
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Eberhard Neuser
Alexander Suppes
Nils Rothe
Pavel Pokutnev
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Baker Hughes Digital Solutions GmbH
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GE Sensing and Inspection Technologies GmbH
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/005—Details of radiation-measuring instruments calibration techniques
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/58—Testing, adjusting or calibrating thereof
    • A61B6/582—Calibration
    • A61B6/583—Calibration using calibration phantoms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
    • A61B6/5258—Devices using data or image processing specially adapted for radiation diagnosis involving detection or reduction of artifacts or noise
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/58—Testing, adjusting or calibrating thereof
    • A61B6/582—Calibration
    • A61B6/585—Calibration of detector units
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4233—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using matrix detectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/04—Force
    • F04C2270/041—Controlled or regulated
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/30—Accessories, mechanical or electrical features
    • G01N2223/303—Accessories, mechanical or electrical features calibrating, standardising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/30—Accessories, mechanical or electrical features
    • G01N2223/303—Accessories, mechanical or electrical features calibrating, standardising
    • G01N2223/3035—Accessories, mechanical or electrical features calibrating, standardising phantom
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G01N2223/419—Imaging computed tomograph

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  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
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  • Computer Vision & Pattern Recognition (AREA)
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  • Analysing Materials By The Use Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
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Abstract

L'invention concerne un procédé pour détecter des propriétés d'imagerie géométrique d'un détecteur à écran plat (12) dans un système d'examen aux rayons X, lequel procédé comprend les étapes consistant à: disposer un corps d'étalonnage (13) entre une source de faisceaux de rayons X (11) et le détecteur à écran plat (12), le corps d'étalonnage (13) comprenant au moins un objet géométrique discret (30); à enregistrer au moins une image radiologique du corps d'étalonnage (13) avec le détecteur à écran plat (12), au moins une figure géométrique discrète (32) étant générée dans l'image radiologique par imagerie dudit objet géométrique discret (30) du corps d'étalonnage (13); puis à déterminer l'erreur de distorsion liée à la position du détecteur à écran plat (12) à partir de ladite image radiologique sur la base d'au moins une caractéristique de ladite figure géométrique discrète (32). Toutes les caractéristiques de ladite figure géométrique discrète (32) utilisées pour déterminer l'erreur de distorsion liée à la position sont indépendantes des dimensions du corps d'étalonnage (13).
CA2892799A 2012-11-30 2013-12-02 Procede pour detecter des proprietes d'imagerie geometrique d'un detecteur a ecran plat, systeme d'examen aux rayons x configure en consequence et corps d'etalonnage Active CA2892799C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12195054.7 2012-11-30
EP12195054.7A EP2737852B1 (fr) 2012-11-30 2012-11-30 Procédé de détection des propriétés d'imagerie géométriques d'un détecteur à panneau plat, systèm de test adapté suivant et corps de calibrage
PCT/EP2013/075293 WO2014083209A1 (fr) 2012-11-30 2013-12-02 Procédé pour détecter des propriétés d'imagerie géométrique d'un détecteur à écran plat, système d'examen aux rayons x configuré en conséquence et corps d'étalonnage

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CA2892799A1 CA2892799A1 (fr) 2014-06-05
CA2892799C true CA2892799C (fr) 2020-09-22

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US (1) US9146327B2 (fr)
EP (1) EP2737852B1 (fr)
JP (1) JP2014109575A (fr)
CN (1) CN103852477A (fr)
CA (1) CA2892799C (fr)
WO (1) WO2014083209A1 (fr)

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Also Published As

Publication number Publication date
EP2737852A1 (fr) 2014-06-04
EP2737852B1 (fr) 2015-08-19
CA2892799A1 (fr) 2014-06-05
JP2014109575A (ja) 2014-06-12
US20140153694A1 (en) 2014-06-05
US9146327B2 (en) 2015-09-29
CN103852477A (zh) 2014-06-11
WO2014083209A1 (fr) 2014-06-05

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